6 FORCE: $$(info $$splanning $$@)
9 %.xa: $$(info $$splanning $$@) %.xb %.xc $$(if $$(wildcard $$*.xc),,$$(info $$*.xc needs touching -> $$(shell [ -r $$*.xc ] && echo 'already exists' || (sleep 1 && touch $$*.xc))))
12 %.xb: $$(info $$splanning $$@) FORCE
15 %.xc: $$(info $$splanning $$@) FORCE